export const  add = (a, b) => {
  // console.log("两个数相加", a + b, _.join(["a", "b", "c"], "===="));
  return a + b
}

console.log(this == window, 'this in other module of common');


export const minus = (a, b) => {
  console.log("两个数相减", a - b);
  return a - b
}